Vise.



J. SAYER & G. G. DENT.

VISE.

APPLICATION FILED 1130.28. 1910.

Patented Nov. 25, 1913.

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VISE.

APPLICATION FILED D120. 28. 1910.

Patented Nov. 25, 1913.

2 SHEETS-SHEET 2.

El. 1 In A w NXW MN awumtod ya? portion of the operating JOHN SAYER AND GEORGE G. DENT, 0F FLAGSTAFF, ARIZONA.

VISE'.

Specification of Letters iatent.

Patented Nov. 25, 1913.

Application filed December 28, 1910.- Serial N0.5.9-9,,71 1.

To all whom it may concern:

Be it known that we, JOHN SAYER and States, residing at Flagstaff, in the county of Goconino and State ofArizona, have invented new and useful Improvements in Vises, of which the following is a specification.

The present invention provides awork holding appliance designed chiefly for carpenters and joiners use for holding work to j a bench or other support, said appliance being in the nature of a vise and embodying a fixed jaw and a movable jaw, the latter being operated by mechanism which admits of quick action of the jaw when adapting the vise to the particular work in hand.

The invention aims to supply a vise of novel structure and to combine therewith peculiar actuating means for the movable jaw, whereby the same may be quickly adapted to the work and moved to secure the same and instantly released when required.

The invention consists of the novel fea tures, details of construction and combination of parts, which hereinafter will be more particularly set forth, illustrated in the accompanying drawings, and pointed out in the appended claims.

Referring to the drawings, forming a part of the application, Figure 1 is a vertical central longitudinalsection of a vise embodying the invention, showing the operating shaft in full lines. Fig. 2 is a top plan view of the movable jaw and operating shaft, a portion of the jaw being broken away. Fi 3 is a view of the fixed jaw inverted. Fig. 4 is a transverse section on the of the operating shaft and shanks of the jaws, showing the screwthreaded portion of the operating shaft in engagement with one set of teeth. Fig. 6 is a sectional view similar to Fig. 5, showing the screwthreaded shaft in engagement with the other set of teeth. Fig. 7 is a sectional view similar to Figs. 5 and 6, showing the operating shaft lowered to throw the screwthread portion thereof out of engagement with both sets of teeth. Fig. 8 is a diagrammatical view, showing the relation of the screwthread portion of the operating shaft and. the two sets of teeth.

The vise is constructed so that when fitted to a bench the fixed jaw will (30111836011?) i flush with the top and the front of the bench, GEORGE Gr. DENT, citizens of the Unlted this being desirable in the formation of a vise designed for carpenters 'and wood joiners. The fixed jaw 1 has a shank. 2 which is provided alongopposite edges with guides 3 and apertured ears-to receive the bolts or fastenings by means of which the vise is secured to the bench or like support The jawl and: shank Zmay be of one piece and the shank is approximately half round in transverse section so as to extend over the operating screw shaft. Two sets'of teeth 4: and 5 are formed upon the lower or inner side of the shank 2 and extend lengthwise thereof in parallel relation and are located U upon opposite sides of a medial line and equidistant therefrom. The teeth are formed upon ribs so as. to stand out from the inner or lower wall of the shank 2. The teeth form segments. of threads and cooperate with the thread of the screw shaft to move the: sliding jaw. The teeth a have a difi'erent arrangement from the teeth 5 so that one set of teeth only is in engagement with the thread of the screw shaft at a time.

The movable aw 6 hasa shank 7 which is hollow and the complement of the shank 2 so as. to form therewith a cylindrical casing for inclosing the operating screw shaft when the parts are assembled. The shank 7 has outer flanges 8 along its upper 1ongitudinal edges to enter the guides 3 and hold the movable jaw and shank in place and direct the jaw 6 in its sliding. movements. The

the space inclosed thereby is closed at its ends by pieces 9 and -10,-which support. the

- operating shaft 11. The front endpiece 10 line 14 of Fig. 1. Fig. 5 is a cross section has an elongated opening 12 for the passage of the operating shaft 11. The end piece 9 has an opening 13 in its inner wall to receive the rear end of the shaft 11. The

jaws and their-shanks may be formed in any manner. The operating shaft 11 is mounted in the end pieces 9 and 10 to admit of its having a limited vertical and lateralplay and has an enlarged portion 14: near itsrear end of circular outline. A portion of the enlargement 14 is threaded, as indicated at 15, and a portion is left plain, as indicated at 16, and has an opening 17 to receive a projection 18 located at the rear end of the shank 7 adjacent tothe wall 9. The projection 18 acts in the capacity, of a lift and .90 shank 7 is half round in cross section and l a stop. As a lift the projection 18 moves the shaft 11 upward to bring the thread 15 of the part 14 into position to engage with the teeth 1 and 5, whereby upon turning the shaft 11 the movable jaw 6 is drawn inward toward the fixed jaw so as to clamp the work placedbetween the two jaws. As a stop'the projection 18 engages an end of the opening 17 to prevent backward turning of the shaft when the projection 18 is lying Within the opening 17 Upon turning the operating shaft 11 to the right the enlargement 14- rides upon the projection 18 and is elevated thereby to bring the thread 15 into engagement with one or the other sets of teeth 4 i or 5 so that a continued rotation of the shaft will cause the thread 15 to cooperate with tance between the two jaws to the size of the work to be gripped. After the movable jaw has been properly adjusted the shaft 11 is turned and the part 16 riding upon the projection 18 is lifted to bring the thread 15 into engagement with the teeth at or 5 and a continued rotation of the shaft causes the thread 15 to cooperate with the teeth engaged thereby to move the jaw so as to clamp the work. The operating shaft may be provided with a single or a multiple thread according to the required pitch and the distance to which the jaw 6 is to be moved by a single revolution of the shaft. The teeth 4 and 5 are thread segments having a pitch to match the threads 15 of the shaft 11. The relative arrangement of the thread segments 4 and 5 is such that the arcuate threads of one segment and out of register-Jess than the width of one threadwith the corresponding threads of the other segment, so the threads of the screw 15 will never strike those of both the segments edge-to-edge, but will with certainty slip into engagement. This takes place when the shaft 11 is turned to the right and is elevated by the cam portion 17 riding on the cam portion 18, the threads 15 slipping into engagement with the registering arcuate threads of one or the other thread segments 1 or 5. This operation insures positive engagement of the threaded portion 15 of the operating shaft with a set of teeth connected with the fixedjaw so that wall 10 so as to prevent relative longitudinal movement of the shaft and jaw. A handle 19 is fitted to the projecting end of the shaft 11 to enable effective application of force for turning the shaft when the vise is in operation.

From the foregoing description, taken in connection with the accompanying drawings, the advantages of the construction and of the method of operation will be readily apparent to those skilled in the art to which the invention appertains, and while we have described the principle of operation of the invention, together with the device which we now consider to be the embodiment thereof, we desire to have it understood that the device shown is merely illustrative, and that such changes may be made when desired as are within the scope of the claims appended hereto.

Having thus described the invention what is claimed as new, is

1. In a vise comprising a fixed jaw and a movable jaw, an operating screw, and two fixed thread segments having a relative arrangement, with the arcuate threads of one segment out of registerless than the width of one thread-with the corresponding threads of the other segment so that the threads of the operating screw will never strike those of both the segments edge-toedge but will with certainty slip into engagement.

2. In a vise comprising a fixed jaw and a movable jaw the combination of an operating screw mounted to have both a vertical and a lateral movement, means for elevating the screw and holding the same in elevated position during a revolution, and two fixed thread segments arranged upon opposite sides of a vertical plane passing through the axis of the operating screw, the relative arrangement being such that the arcuate threads of one segment are out of registerless than the width of one threadwith the corresponding threads of the other segment to prevent the matching of the threads of the operating screw with both the segments at the same time when said operating screw is elevated.

3. The herein described vise comprising a fixed jaw having a shank formed upon its inner side with longitudinal ribs which are transversely spaced, each of the ribs having arcuate threads, the threads of one segment being out of register with the corresponding threads of the other segment, a movable jaw provided with a shank having portions engaging the shank of the fixed jaw to form guide means, a shaft mounted in the movable jaw and having a limited relative lateral play and having a screwthread to match with the threads of the segments but adapted to engage with one only at the same time, said shaft having an enlarged portion having a part formed with the before-mentioned ing engagement With one or the other of the screWthread and the remaining portion said segments. 7 plain and formed With an opening having In testimony whereof We affix our signa one slde inclined, and a projection carried tures in presence of two Witnesses.

5 by the shank of the movable jaw to enter the opening of the enlarged portion of the JOHN SAYER shaft to admit of the screwthread of said GEORGE DENT shaft clearing the before mentioned seg- Witnesses: ments, said shaft being elevated when JosEPH DENT,

10 turned to bring its screwthread into match- N. G. LAYTON.

Copies of this patent may be obtained for five cents each, by addressing the Gommissioner of Patents, Washington, I). G. 

